Disables failing (low-latency) audio unit tests on Windows 7.

media/audio/win/audio_low_latency_output_win_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <windows.h>
 #include <mmsystem.h>
 
 #include "base/basictypes.h"
 #include "base/environment.h"
 #include "base/file_util.h"
@@ skipping 433 matching lines @@
               Return(bytes_per_packet)));
 
   aos->Start(&source);
   loop.PostDelayedTask(FROM_HERE, MessageLoop::QuitClosure(),
                        TestTimeouts::action_timeout_ms());
   loop.Run();
   aos->Stop();
   aos->Close();
 }
 
-TEST(WinAudioOutputTest, WASAPIAudioOutputStreamTestMono) {
+// TODO(henrika): enable this test again using an improved fall-back
+// mechanism for those platforms which does not support mono output.
+// See crbug.com/112986 for details.
+TEST(WinAudioOutputTest, DISABLED_WASAPIAudioOutputStreamTestMono) {
   scoped_refptr<AudioManager> audio_manager(AudioManager::Create());
   if (!CanRunAudioTests(audio_manager))
     return;
 
   MessageLoopForUI loop;
   scoped_refptr<base::MessageLoopProxy> proxy(loop.message_loop_proxy());
 
   MockAudioSourceCallback source;
 
   // Create default WASAPI output stream which plays out in *mono* using
@@ skipping 67 matching lines @@
   aos->Start(&file_source);
   base::PlatformThread::Sleep(
       base::TimeDelta::FromMilliseconds(kFileDurationMs));
   aos->Stop();
 
   LOG(INFO) << ">> File playout has stopped.";
   aos->Close();
 }
 
 }  // namespace media